mapdemo.java

业界著名的tomcat服务器的最新6.0的源代码。

package org.apache.catalina.tribes.demos;

import java.io.Serializable;
import java.util.Map;

import java.awt.ComponentOrientation;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;

import org.apache.catalina.tribes.Channel;
import org.apache.catalina.tribes.ChannelListener;
import org.apache.catalina.tribes.ManagedChannel;
import org.apache.catalina.tribes.Member;
import org.apache.catalina.tribes.MembershipListener;
import org.apache.catalina.tribes.tipis.AbstractReplicatedMap;
import org.apache.catalina.tribes.tipis.LazyReplicatedMap;
import javax.swing.table.DefaultTableCellRenderer;
import java.awt.Color;
import java.awt.Component;
import javax.swing.table.TableColumn;
import org.apache.catalina.tribes.util.UUIDGenerator;
import org.apache.catalina.tribes.util.Arrays;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class MapDemo implements ChannelListener, MembershipListener{
    
    protected LazyReplicatedMap map;
    protected SimpleTableDemo table;
    
    public MapDemo(Channel channel, String mapName ) {
        map = new LazyReplicatedMap(null,channel,5000, mapName,null);
        table = SimpleTableDemo.createAndShowGUI(map,channel.getLocalMember(false).getName());
        channel.addChannelListener(this);
        channel.addMembershipListener(this);
//        for ( int i=0; i<1000; i++ ) {
//            map.put("MyKey-"+i,"My String Value-"+i);
//        }
        this.messageReceived(null,null);
    }
    
    public boolean accept(Serializable msg, Member source) {
        table.dataModel.getValueAt(-1,-1);
        return false;
    }
    
    public void messageReceived(Serializable msg, Member source) {
        
    }
    
    public void memberAdded(Member member) {
    }
    public void memberDisappeared(Member member) {
        table.dataModel.getValueAt(-1,-1);
    }
    
    public static void usage() {
        System.out.println("Tribes MapDemo.");
        System.out.println("Usage:\n\t" + 
                           "java MapDemo [channel options] mapName\n\t" +
                           "\tChannel options:" +
                           ChannelCreator.usage());
    }

    public static void main(String[] args) throws Exception {
        long start = System.currentTimeMillis();
        ManagedChannel channel = (ManagedChannel) ChannelCreator.createChannel(args);
        String mapName = "MapDemo";
        if ( args.length > 0 && (!args[args.length-1].startsWith("-"))) {
            mapName = args[args.length-1];
        }
        channel.start(channel.DEFAULT);
        Runtime.getRuntime().addShutdownHook(new Shutdown(channel));
        MapDemo demo = new MapDemo(channel,mapName);
        
        System.out.println("System test complete, time to start="+(System.currentTimeMillis()-start)+" ms. Sleeping to let threads finish.");
        Thread.sleep(60 * 1000 * 60);
    }

    public static class Shutdown
        extends Thread {
        ManagedChannel channel = null;
        public Shutdown(ManagedChannel channel) {
            this.channel = channel;
        }

        public void run() {
            System.out.println("Shutting down...");
            SystemExit exit = new SystemExit(5000);
            exit.setDaemon(true);
            exit.start();
            try {
                channel.stop(channel.DEFAULT);

            } catch (Exception x) {
                x.printStackTrace();
            }
            System.out.println("Channel stopped.");
        }
    }

    public static class SystemExit
        extends Thread {
        private long delay;
        public SystemExit(long delay) {
            this.delay = delay;
        }

        public void run() {
            try {
                Thread.sleep(delay);
            } catch (Exception x) {
                x.printStackTrace();
            }
            System.exit(0);

        }
    }

    public static class SimpleTableDemo
        extends JPanel implements ActionListener{
        private static int WIDTH = 550;
        
        private LazyReplicatedMap map;
        private boolean DEBUG = false;
        AbstractTableModel dataModel = new AbstractTableModel() {
            
            
            String[] columnNames = {
                                   "Key",
                                   "Value",
                                   "Backup Node",
                                   "isPrimary",
                                   "isProxy",
                                   "isBackup"};

            public int getColumnCount() { return columnNames.length; }
    
            public int getRowCount() {return map.sizeFull() +1; }
            
            public StringBuffer getMemberNames(Member[] members){
                StringBuffer buf = new StringBuffer();
                if ( members!=null ) {
                    for (int i=0;i<members.length; i++ ) {
                        buf.append(members[i].getName());
                        buf.append("; ");
                    }
                }
                return buf;
            }
            
            public Object getValueAt(int row, int col) {
                if ( row==-1 ) {
                    update();
                    return "";
                }
                if ( row == 0 ) return columnNames[col];
                Object[] entries = map.entrySetFull().toArray();
                Map.Entry e = (Map.Entry)entries [row-1];
                LazyReplicatedMap.MapEntry entry = (LazyReplicatedMap.MapEntry)e.getValue();
                switch (col) {
                    case 0: return entry.getKey();
                    case 1: return entry.getValue();
                    case 2: return getMemberNames(entry.getBackupNodes());
                    case 3: return new Boolean(entry.isPrimary());
                    case 4: return new Boolean(entry.isProxy());
                    case 5: return new Boolean(entry.isBackup());
                    default: return "";
                }
                
            }
            
            public void update() {
                fireTableDataChanged();
            }
        };
        
        JTextField txtAddKey = new JTextField(20);
        JTextField txtAddValue = new JTextField(20);
        JTextField txtRemoveKey = new JTextField(20);
        JTextField txtChangeKey = new JTextField(20);
        JTextField txtChangeValue = new JTextField(20);
        
        JTable table = null;
        public SimpleTableDemo(LazyReplicatedMap map) {
            super();